JP6441103B2 - Image display device - Google Patents

Description

  Embodiments described herein relate generally to an image display apparatus.

  Conventionally, an image display device having two lenticular lenses and a component for reducing crosstalk is known.

JP 2014-199393 A

  In an image display device using a lenticular lens, for example, it is meaningful if a new configuration with less inconvenience is obtained.

The image display apparatus according to the embodiment includes, for example, a first lens member and a second lens member. The first lens member includes a plurality of first cylindrical lenses that extend along a first direction and are arranged in a second direction orthogonal to the first direction, and two first cylindrical lenses adjacent to each other. A plurality of first protrusions extending between the first protrusions extending in the first direction and a plurality of first valleys positioned between the two first cylindrical lenses adjacent to each other and not provided with the first protrusions Part . The second lens member has the same configuration as the first lens member, the plurality of second cylindrical lenses having the same configuration as the plurality of first cylindrical lenses, and the same configuration as the plurality of first protrusions. A plurality of second protrusions, and a plurality of second troughs that are located between two adjacent second cylindrical lenses and are not provided with the second protrusions . The first lens member and the second lens members, each tip of the tip of each of the plurality first protrusion of the plurality together when inserted into the second valley second protrusion first in a state of being inserted in one valley, Ru superimposed each other.

FIG. 1 is an exemplary schematic side view of a part of the image display apparatus according to the first embodiment. FIG. 2 is an exemplary and schematic side view of a part of an image display apparatus according to a first modification of the first embodiment. FIG. 3 is an exemplary graph of a correspondence relationship between the viewing zone angle and the light amount in the image display apparatus according to the first embodiment. FIG. 4 is an exemplary graph showing a correspondence relationship between the viewing zone angle and the light amount in the reference example in which the protruding portion is removed from the image display apparatus according to the first embodiment. FIG. 5 is an exemplary and schematic exploded perspective view of the image display apparatus according to the first embodiment. FIG. 6 is an exemplary schematic plan view of a lens assembly and a medium on which an image of the image display apparatus according to the first embodiment is drawn and a mark is provided. The image is drawn and the mark is provided. FIG. 6 is a diagram illustrating a state where the medium and the lens assembly are aligned. FIG. 7 is an exemplary schematic plan view of a lens assembly and a medium on which an image of the image display apparatus according to the first embodiment is drawn and a mark is provided. The image is drawn and the mark is provided. FIG. 6 is a diagram illustrating a state where the medium and the lens assembly are displaced before being aligned. FIG. 8 is an exemplary schematic side view of the image display apparatus according to the first embodiment, in which an image is drawn and a medium provided with a mark is aligned with a lens assembly. FIG. FIG. 9 is an exemplary and schematic exploded perspective view of an image display apparatus according to a second modification of the first embodiment. FIG. 10 is an exemplary and schematic exploded perspective view of a medium and a positioning member on which an image of an image display device according to a third modification of the first embodiment is drawn and a mark is provided. FIG. 11 is an exemplary and schematic exploded perspective view of a medium and a positioning member on which an image of an image display device according to a fourth modification of the first embodiment is drawn and a mark is provided. FIG. 12 is an exemplary schematic plan view of a mark provided on a medium on which an image of the image display apparatus according to the second embodiment is drawn. FIG. 13 is an exemplary plan view of a portion of the mark of FIG. 12 visible through the lens assembly, with the media and lens assembly aligned. FIG. 14 is an exemplary plan view of a portion of the mark of FIG. 12 visible through the lens assembly, with the media and lens assembly not aligned. FIG. 15 is an exemplary plan view of a portion of the mark of FIG. 12 visible through the lens assembly, showing a wider view with the media and the lens assembly not aligned. FIG. 16 is an exemplary schematic plan view of a mark provided on a medium on which an image of an image display apparatus according to a modification of the second embodiment is drawn. FIG. 17 is an exemplary plan view of a portion of the mark of FIG. 16 visible through the lens assembly, with the media and lens assembly aligned. FIG. 18 is an exemplary plan view of a portion of the mark of FIG. 16 visible through the lens assembly, with the media and the lens assembly not aligned. FIG. 19 is an exemplary plan view of the portion of the mark of FIG. 16 visible through the lens assembly, with a wider view with the media and lens assembly not aligned.

  Hereinafter, exemplary embodiments of the present invention are disclosed. The configurations and controls (technical features) of the embodiments described below, and the operations and results (effects) brought about by the configurations and controls are examples. Moreover, the same component is contained in several embodiment and modification which are illustrated below. In the following, similar constituent elements are given common reference numerals, and redundant description is omitted.

<First Embodiment>
As illustrated in FIG. 1, the image display device 1 according to the present embodiment includes a lens assembly 2 and a medium 3 that are arranged to overlap each other in the Z direction. The Z direction can be referred to as the thickness direction or the stacking direction. The user views an image (not shown) drawn on the surface 3 a of the medium 3 from the side opposite to the medium 3 through the lens assembly 2. The lens assembly 2 is a lenticular lens. The user can visually recognize a stereoscopic image without using 3D glasses or the like by viewing the image of the surface 3a processed according to the configuration and characteristics of the lens assembly 2 through the lens assembly 2. it can. The principle and effect of the lenticular lens are known.

  However, the lens assembly 2 of the present embodiment has a new configuration that is not present in the past. That is, the lens assembly 2 includes a plurality of lens members 21 and 22. Each of the lens members 21 and 22 is a lenticular lens. The at least two lens members 21 and 22 included in the set are parts having the same configuration on at least the lens surfaces 21a and 22a, for example, the same parts, that is, parts having the same specifications. With such a configuration, the labor and cost of manufacturing the lens surfaces 21a and 22a, the lens members 21 and 22, and the lens assembly 2 are reduced as compared with the case where the lens assembly is configured by lens members having different lens surfaces. be able to. More specifically, for example, when the lens members 21 and 22 are formed by injection molding of a synthetic resin material such as transparent plastic, a mold (mold) used for injection molding of the lens members 21 and 22 is used. Therefore, the labor and cost required for mold production can be reduced as much as only one mold is required. The lens surfaces 21a and 22a may also be referred to as convex surfaces or uneven surfaces.

  The lens member 21 has a plurality of cylindrical lenses 23 extending along the X direction orthogonal to the paper surface of FIG. Each cylindrical lens 23 has the same (common) convex surface 23a (curved surface) extending in the X direction. The plurality of cylindrical lenses 23 are arranged at a constant installation interval (first installation interval, first pitch) in a state of being adjacent to each other along the Y direction orthogonal to (crossing) the X direction. The lens member 21 has a planar surface 21b on the side opposite to the lens surface 21a including the plurality of convex surfaces 23a. The X direction is an example of a first direction, and the Y direction is an example of a second direction. The lens member 21 is an example of a first lens member. The cylindrical lens 23 included in the lens member 21 is an example of a first cylindrical lens.

  The lens member 22 is located on the opposite side of the lens member 21 from the medium 3. The lens member 22 is the same component as the lens member 21. That is, the lens member 22 includes a plurality of cylindrical lenses 23 having the same specifications as those of the lens member 21. The lens member 22 has a lens surface 22a having the same specifications as the lens surface 21a and a surface 22b having the same specifications as the surface 21b. The lens member 22 is an example of a second lens member. The cylindrical lens 23 included in the lens member 22 is an example of a second cylindrical lens.

  The lens members 21 and 22 are integrated in opposite postures, that is, in a posture reversed in the Z direction. The lens members 21 and 22 can be coupled by various coupling methods, coupling members, and the like. The lens members 21 and 22 are overlapped with the top portions (ridge lines and bus lines) of the cylindrical lens 23 being in contact with each other.

  Further, as shown in FIG. 1, the lens members 21 and 22 each have a plurality of protrusions 24. The protruding portion 24 is positioned at a valley portion 23b (boundary portion) between the cylindrical lenses 23 and 23 adjacent to each other, and protrudes in the direction in which the cylindrical lens 23 protrudes (Z direction). As described above, since the lens members 21 and 22 are overlapped with the top portions of the cylindrical lenses 23 being in contact with each other, the protruding portion 24 of the lens member 21 protrudes toward the valley portion 23b of the lens member 22, and the lens. The protruding portion 24 of the member 22 protrudes toward the valley portion 23 b of the lens member 21. Moreover, the protrusion part 24 is extended in the wall shape along the X direction orthogonal to a paper surface.

  As described above, at least the lens surfaces 21a and 22a of the lens members 21 and 22, that is, the portions including the plurality of cylindrical lenses 23 and the plurality of protrusions 24 have the same configuration (specification). Therefore, the plurality of protrusions 24 need to be arranged so as not to overlap each other in the Z direction in a state where the lens members 21 and 22 are overlapped so that the lens surfaces 21a and 22a face each other. Therefore, in the example of FIG. 1, the lens member 21 is provided with protruding portions 24 at every other valley portion 23b between two cylindrical lenses 23 adjacent to each other. Protrusions 24 are positioned at every other trough 23b between two adjacent cylindrical lenses 23. Thereby, in the lens assembly 2, the structure by which the protrusion part 24 of the lens member 21 and the protrusion part 24 of the lens member 22 are alternately arrange | positioned along the Y direction is obtained. The arrangement of the protrusions 24 is not limited to this. For example, as illustrated in FIG. 2 corresponding to the first modification, a fixed number n (n ≧ 2, FIG. 2, n = 2) valleys 23 b and a fixed number n of valleys 23 b in which the protrusions 24 are not provided may be alternately arranged. For example, although not shown, the protruding portions 24 may be provided in all the valley portions 23b on one side from the center in the Y direction. In this way, the lens members 21 and 22 can overlap without causing the protrusion 24 of the lens member 21 and the protrusion 24 of the lens member 22 to interfere with each other.

  As apparent from FIG. 1, the tip 24 a of the protrusion 24 of the lens member 21 is inserted into the valley 23 b of the lens member 22, and the tip 24 a of the protrusion 24 of the lens member 22 is inserted into the lens member 21. It is inserted into the valley 23b. The lens members 21 and 22 are configured such that the ridge lines of the cylindrical lenses 23 facing each other are in contact with each other, and a minute gap having a distance of 0 (zero) or more is formed between the tip portion 24a and the valley portion 23b. Has been. In addition, although the front-end | tip part 24a is formed in a curved surface shape, it is not limited to this.

  Such a protrusion 24 functions as a light shielding part or a scattering part. By providing the protrusion 24, the light is blocked or scattered. As a result, as indicated by a two-dot chain line N in FIG. 1, light that should exit the cylindrical lens 23 of the lens member 21 and enter the cylindrical lens 23 directly above the lens member 22 is incident on the cylindrical lens immediately above. Incidence of the noise component (crosstalk) entering the cylindrical lens 23 adjacent to the lens 23 is suppressed. FIG. 3 is an exemplary graph showing a correspondence relationship between the viewing zone angle (angle with respect to the Z direction around the X direction) and the amount of light in the image display device 1 provided with the protruding portion 24 of the present embodiment. FIG. 4 is an exemplary graph showing a correspondence relationship between the viewing zone angle and the light amount in the image display apparatus 1 of the reference example in which the protruding portion 24 is not provided. 3 and 4, it can be understood that the noise component CT (crosstalk) is reduced according to the configuration of the present embodiment of FIG. 3 as compared with the comparative example of FIG. The surface of the protrusion 24 can be formed to be rougher than the surface of the cylindrical lens 23. When the surface of the protrusion 24 is a rough surface, light is likely to be scattered on the surface of the protrusion 24. In addition, in order to roughen the surface of the protruding portion 24, a rough surface treatment such as sandblasting may be performed on the concave portion corresponding to the protruding portion 24 of the mold of the lens members 21 and 22.

  In the present embodiment, the protrusion 24 is used for positioning the lens members 21 and 22 in the Y direction. That is, the tip 24a of the protruding portion 24 protruding from one of the lens members 21 and 22 is inserted into the other valley 23b. Therefore, the lens members 21 and 22 are restrained from moving in the Y direction due to the catch between the distal end portion 24a of the projecting portion 24 and the cylindrical lenses 23 on both sides in the Y direction of the valley portion 23b. A state is obtained in which the valley portions 23b of each other face each other in the Z direction. In this way, the protruding portion 24 functions as a positioning portion in at least the Y direction of the lens members 21 and 22. Note that the protrusion 24 can also function as a positioning portion in the Z direction. Further, the cylindrical lens 23 of the lens member 21 and the cylindrical lens 23 of the lens member 22 may or may not contact each other.

  The medium 3 may be directly attached to the lens assembly 2 by, for example, bonding or using a coupler, or may be a separate case such as a case fixed to the lens assembly 2 or supporting the lens assembly 2. These members may be supported or attached in an aligned state. The medium 3 is, for example, paper on which an image (not shown) is printed.

  As illustrated in FIGS. 5 and 6, the lens assembly 2 and the medium 3 are provided with marks 4 and 5 for alignment in at least the Y direction of the X direction and the Y direction. One of the lens assembly 2 and the medium 3 (the medium 3 in the present embodiment) is provided with three marks 4 (4L, 4C, 4R), and the other (the lens assembly 2 in the present embodiment) has one mark. A mark 5 is provided. Each of the marks 4 and 5 extends in a strip shape (line segment shape) along the X direction, that is, the direction in which the cylindrical lens 23 extends. The three marks 4L, 4C, 4R are arranged at equal intervals. Note that the intervals between the marks 4L, 4C, and 4R are set to be appropriately separated. For example, the interval between the marks 4L and 4R may substantially coincide with the interval between the two eyes of a human. These marks 4 and 5 may be provided at positions deviating from the main image of the medium 3 and may be covered by a case (not shown) of the image display device 1.

  In the example of FIGS. 5 and 6, the lens assembly is arranged such that the mark 4 </ b> C located at the center of the three marks 4 provided on the medium 3 and the mark 5 provided on the lens assembly 2 overlap each other in the Z direction. 2 and the medium 3 (image) are aligned. First, the user hides a part (for example, about half) of the mark 4 provided on the medium 3 by the end 2a of the lens assembly 2, and the other part (for example, the remaining half) is exposed from the end 2a. In such a state, the lens assembly 2 and the medium 3 are overlapped in the Z direction. Then, the user moves at least one of the lens assembly 2 and the medium 3 while moving the mark 4C and the mark 5 in a state where the marks 4C and the mark 5 are continuous in the extending direction (X direction), that is, the position in the state shown in FIG. look for. Then, in the state of FIG. 6, for example, the user attaches the lens assembly 2 and the medium 3 using an adhesive tape or bonds them using a coupling tool such as a pin, whereby the lens assembly 2 and the medium 3 are bonded. 3 is fixed in a positioned state.

  FIG. 8 is a side view of the lens assembly 2 and the medium 3 in the aligned state. As shown in FIG. 8, in this embodiment, the marks 4 and 5 are such that the mark 4C, the valley 23b, and the protrusion 24 overlap in the Z direction in a state where the lens assembly 2 and the medium 3 are aligned. The marks 4L and 4R and the top of the cylindrical lens 23 are set so as to overlap in the Z direction.

  Therefore, as shown in FIG. 6, in the aligned state, the widths of the images 41 </ b> L and 41 </ b> R of the marks 4 </ b> L and 4 </ b> R viewed by the user through the lens assembly 2 are directly viewed without passing through the lens assembly 2. It becomes larger than the width of the marks 4L and 4R. In the aligned state, the mark 4C and the valley 23b between the two cylindrical lenses 23 overlap in the Z direction, and the optical path is largely refracted by the valley 23b, so that the lens assembly 2 of the mark 4C passes through. The observed image 41C (see FIG. 7) is not visible. However, in this state, the portion of the mark 4C that is not hidden by the end 2a of the lens assembly 2 and the mark 5 provided on the lens assembly 2 are arranged linearly in the X direction. The cylindrical lens 23 is an example of a lens unit. The marks 4L and 4R are examples of the first mark, and the mark 4C is an example of the second mark.

  On the other hand, as shown in FIG. 7, in a state where the alignment is not performed, the relative setting position of the mark 4 </ b> C with respect to the eye position, the width (size) of the mark 4 </ b> C, the specification of the lens assembly 2, and the like are adjusted. Can be configured such that the image 41C of the mark 4C through the lens assembly 2 looks to some extent, for example thin or thin. In FIG. 7, for the sake of easy understanding, the shift amount is exaggerated to be larger than the actual shift amount.

  On the other hand, as described above, in the state of being aligned as shown in FIG. 6, the image of the mark 4C that has passed through the lens assembly 2 is largely refracted at the valley portion 23b and thus cannot be seen. That is, according to the present embodiment, the mark 4C and the lens assembly 2 pass through the lens assembly 2 of the mark 4C when the mark 4C and the lens assembly 2 shift from the unaligned state of FIG. 7 to the aligned state of FIG. It can be configured to shift from a state in which the image 41C is visible to a state in which the image 41C is not visible, that is, a state in which the image 41C has disappeared.

  In addition, regarding the marks 4L and 4R and the images 41L and 41R of the marks 4L and 4R that have passed through the lens assembly 2, the transition from the unaligned state of FIG. 7 to the aligned state of FIG. The images 41L and 41R and the marks 4L and 4R that are directly visible without being hidden by the lens assembly 2 shift from the state shifted in the Y direction to the state aligned linearly in the X direction. Therefore, according to the configuration of the present embodiment, for example, after the rough alignment by the mark 4C and the mark 5 is performed, more detailed (higher accuracy is obtained by the marks 4L and 4R and the images 41L and 41R. ) Alignment can be performed.

  As described above, in the present embodiment, at least the lens surfaces 21 a and 22 a of the two lens members 21 and 22 (first lens member and second lens member) included in the lens assembly 2, that is, a plurality of lens members 21 and 22. The portion including the cylindrical lens 23 and the plurality of protruding portions 24 has the same configuration (specification). Therefore, for example, compared to a case where a lens assembly is configured by combining lens members having different configurations (specifications), it is easy to reduce manufacturing effort and cost. Moreover, in this embodiment, while the two lens members 21 and 22 can be positioned by the protrusion part 24, crosstalk can be suppressed. Therefore, for example, compared with the case where the configuration for positioning and the configuration for suppressing crosstalk are provided separately, there is an advantage that the image display device 1 is further simplified and further downsized. can get.

  In the present embodiment, the images 41L and 41R obtained by visually (optically) enlarging the marks 4L and 4R (first mark) by the cylindrical lens 23 (lens portion) are the lens assembly 2 (lens member 21). , 22) and the position of the medium 3 (image provided on the medium 3). Thus, for example, alignment can be performed more easily or with higher accuracy.

  In the present embodiment, the lens unit that enlarges the mark 4 at the time of alignment is the cylindrical lens 23. Therefore, for example, the cylindrical lens 23 can also be used as a lens unit, so that the image display device 1 can be more simplified or more compared to the case where the cylindrical lens 23 and the lens unit are provided separately. Advantages such as downsizing can be obtained.

  Further, in the present embodiment, the lens assembly 2 (lens members 21 and 22) and the medium 3 (image) are visually expanded through the marks 4L and 4R and the marks 4L and 4R via the lens assembly 2. The images 41L and 41R are aligned. Therefore, for example, the labor and cost of providing the mark 5 for alignment on the lens assembly 2 may be reduced.

  In the present embodiment, at least a part of the mark 4C (second mark) overlaps with the valley 23b (boundary portion) and cannot be seen at the lens assembly 2 (lens members 21 and 22) and the medium 3 ( Image). Therefore, for example, when the image 41C corresponding to the mark 4C disappears when shifting from the unaligned state to the aligned state, the user can more easily recognize that the aligned state has been achieved. Become. In addition, since the protrusion part 24 (a 1st protrusion part, a 2nd protrusion part) is provided in the trough part 23b, the mark 4C may be provided in the position which overlaps with the protrusion part 24. FIG.

  9 to 11, the lens unit 6 that visually enlarges the mark 4 may be provided separately from the cylindrical lens 23. In the example of FIG. 9, the lens unit 6 is provided at an end portion (corner, side, peripheral portion) away from the cylindrical lens 23 of the lens assembly 2. In the examples of FIGS. The positioning member 7 is different from the lens assembly 2 (not shown in FIGS. 10 and 11). 9 to 11, a lens assembly is formed by an image (not shown) obtained by visually enlarging the mark 4 provided on the medium 3 for displaying an image (not shown) by the lens unit 6 and the mark 5. 2 and medium 3 can be aligned. Further, the mark 4 and an image in which the mark 4 is visually enlarged by the lens unit 6 may be used for alignment. In addition, at least one of the marks 4 and 5 may be linear as shown in FIGS. 9 and 10, or at least one of them may be cross-shaped as shown in FIGS. Also good. When the marks 4 and 5 are cross-shaped, or when the plurality of marks 4 and 5 are spaced apart in the X direction, the lens assembly 2 and the medium 3 (image) are in the X direction. Can also be aligned. Further, the lens unit 6 and the marks 4 and 5 may be covered with a case (not shown) of the image display device 1.

  10 and 11, the lens assembly 2 and the medium 3 (images thereof) are indirectly positioned through the positioning member 7. Specifically, in a state where the medium 3 and the positioning member 7 are aligned by the marks 4 and 5, the medium 3 is moved along the edge 7 a (end portion) of the positioning member 7 by, for example, a cutter (not shown). Disconnected. 10 and 11, the cutting line CL is indicated by a one-dot chain line. In this case, for example, the lens assembly 2 and the image are aligned by aligning the cut edge 3b (end) of the medium 3 and the end (not shown) of the lens assembly 2 at least in the Y direction. Can be done. Further, for example, the case (not shown) of the image display device 1 and the lens assembly 2 are aligned at least in the Y direction, and the wall (not shown) of the case and the edge 3b abut each other and are positioned in the Y direction. By the alignment, the lens assembly 2 and the image can be aligned at least in the Y direction. According to the examples of FIGS. 10 and 11, for example, since it is not necessary to provide the lens portion 6 in the lens assembly 2, labor and cost of manufacturing the lens assembly 2 are reduced, and the lens assembly 2 is simpler or smaller. May be configured.

Second Embodiment
The second embodiment has the same configuration as the first embodiment. Therefore, the same effect (result) based on the same configuration can be obtained also in the second embodiment. However, in the present embodiment, the configuration of the mark 4A provided on the medium 3 is different from that in the first embodiment. Specifically, as shown in FIG. 12, the mark 4A includes a plurality of lines 4a extending in parallel to the X direction at intervals in the Y direction. The mark 4A includes a plurality of patterns P1 and P2 having different intervals (pitch) between the lines 4a. The distance between the lines 4a is slightly different between the pattern P1 and the pattern P2. The pattern P1 is disposed on one side in the X direction, and the pattern P2 is positioned on the other side in the X direction. When the number of dots of the image corresponding to the width in the Y direction of one cylindrical lens 23 is d, that is, the width in the Y direction of the cylindrical lens 23 is d (dot), for example, the interval between the lines 4a of the pattern P1 is d + m. (Dot), and the interval between the lines 4a of the pattern P2 is set to dm (dot) (m: an integer of 1 or more). In the example of FIG. 12, a line 4b that is thicker than the other lines 4a and extends in the X direction is provided at the center in the Y direction. The pattern P1 is an example of the first region, the pattern P2 is an example of the second region, the interval between the lines 4a of the pattern P1 is an example of the first installation interval, and the interval between the lines 4a of the pattern P2 is It is an example of the 2nd installation space | interval. The line 4a is an example of a mark (first mark). The pattern P1 and the pattern P2 may be provided adjacent to each other as illustrated in FIG. 12 or may be provided apart from each other. Even if only one of the pattern P1 and the pattern P2 is installed, it can be used for alignment.

  When the mark 4A in FIG. 12 is viewed through the lens assembly 2, moire is visible. If the row of marks 4A and the row of cylindrical lenses 23 included in the lens assembly 2 are misaligned or tilted, the misalignment is visually easy to understand. 13 shows a state where the mark 4A and the lens assembly 2 are aligned, FIG. 14 shows a state where the mark 4A and the lens assembly 2 are displaced in the Y direction, and FIG. 15 shows a state where the mark 4A and the lens assembly 2 are aligned. Is in a tilted state. From these FIGS. 13 to 15, it can be understood that by using the mark 4 </ b> A of the present embodiment, a moire can be seen, and whether or not the alignment is made easier by the way the moire is seen. In the state of FIGS. 14 and 15, the central line 4b is difficult to see. Further, the alignment by the mark 4 </ b> A can be performed at the periphery of the lens assembly 2 and the medium 3. In addition, the moire may be more easily understood by making the color of the line 4a different between the patterns P1 and P2, or coloring the plurality of lines 4a with a plurality of colors and setting the coloring pattern.

<Modification of Second Embodiment>
In the modified example of FIG. 16 as well, as in the case of FIG. 12, the mark 4B includes a plurality of lines 4a extending in parallel to the X direction with an interval in the Y direction. The mark 4B includes a plurality of patterns P1 and P2 having different intervals (pitch) between the lines 4a. Then, the interval between the lines 4a is slightly different between the pattern P1 and the pattern P2. However, in this modification, patterns P1 and P2 having the same width (length) in the X direction are alternately arranged in the X direction. As in the case of FIG. 12, when the number of dots of the image corresponding to the width in the Y direction of one cylindrical lens 23 is d, that is, when the width in the Y direction of the cylindrical lens 23 is d (dot), the line of the pattern P1 The interval 4a is set to d + m (dots), and the interval between the lines 4a of the pattern P2 is set to dm (dots) (m is an integer of 1 or more). Also in this example, a line 4b that is thicker than the other lines 4a and extends in the X direction is provided at the center in the Y direction. The pattern P1 is an example of the first region, the pattern P2 is an example of the second region, the interval between the lines 4a of the pattern P1 is an example of the first installation interval, and the interval between the lines 4a of the pattern P2 is It is an example of the 2nd installation space | interval.

  When the mark 4B in FIG. 16 is viewed through the lens assembly 2, moire can be seen. When the row of marks 4B and the row of cylindrical lenses 23 included in the lens assembly 2 are misaligned or tilted, the misalignment is visually easy to understand. 17 shows a state where the mark 4B and the lens assembly 2 are aligned, FIG. 18 shows a state where the mark 4B and the lens assembly 2 are displaced in the Y direction, and FIG. 19 shows a state where the mark 4B and the lens assembly 2 are aligned. Is in a tilted state. From FIGS. 17 to 19, by using the mark 4 </ b> B of the present modification, it is possible to see moire, and it is easier to understand whether or not the position is aligned depending on how the moire is seen. Note that, even in the state of FIGS. 17 and 18, the central line 4b is difficult to see. Also in this modification, moire can be more easily understood by changing the color of the line 4a between the patterns P1 and P2, or by coloring the plurality of lines 4a with a plurality of colors and setting the coloring pattern. There is a case. Moreover, the modification of 2nd Embodiment shown by FIGS. 16-19 is equipped with the structure similar to the said 1st Embodiment. Therefore, also by this modification, the same effect (result) based on the said same structure is acquired.

  As mentioned above, although embodiment of this invention was illustrated, the said embodiment is an example and is not intending limiting the range of invention. These embodiments can be implemented in various other forms, and various omissions, replacements, combinations, and changes can be made without departing from the scope of the invention. These embodiments are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof. In addition, the configuration and shape of each embodiment and each modification may be partially exchanged. In addition, specifications (structure, type, direction, shape, size, length, width, thickness, height, number, arrangement, position, material, etc.) of each configuration and shape, etc. are changed as appropriate. can do. For example, specifications such as a lens member, a cylindrical lens, a protruding portion, a mark, and an installation interval are not limited to the above-described embodiment and modification examples. Further, the cylindrical lens used for alignment by the mark may be one of two lens members. Further, the alignment by the mark is not limited to the alignment between the lens assembly and the image (medium), and can be similarly applied to the alignment of the two lens members. In addition, the lens assembly or the lens member that can be aligned by the mark is not limited to that disclosed in the above embodiment. For example, the two lens members included in the lens assembly may not have the same shape. The lens member may not include the protrusion, or the lens assembly may include only one lens member (one lenticular lens). Further, the medium may be paper, a film, a sheet, or the like, and may be composed of various materials. The medium may be, for example, an electric display such as an LCD (liquid crystal display) or an OELD (organic electro-luminescent display), an electric bulletin board, a digital signage, another electric display device, or the like. The image may be a still image or a moving image.

The embodiment of the present invention can also be implemented as the following configuration.
[1]
A lens member having a lenticular lens including a plurality of cylindrical lenses, and a lens portion;
An image display device configured to allow an image to be seen through the lens member,
An image configured to be used for alignment between the lens member and the image in a state in which a first mark provided on the medium and whose position with respect to the image is fixed is visually enlarged by the lens unit Display device.
[2]
The image display device according to [1], wherein the lens unit is any one of the plurality of cylindrical lenses.
[3]
The image display device according to [1] or [2], comprising the medium.

  DESCRIPTION OF SYMBOLS 1 ... Image display apparatus, 4, 4A, 4B ... mark, 4L, 4R ... (first) mark, 4C ... (second) mark, 6 ... Lens part, 21 ... Lens member (1st lens member) , 22 ... lens member (second lens member), 23 ... (first or second) cylindrical lens (lens portion), 24 ... (first or second) protrusion, 41L, 41R ... image, P1 ... 1st area | region, P2 ... 2nd area | region.

Claims (9)

A plurality of first cylindrical lenses that extend along the first direction and are arranged in a second direction orthogonal to the first direction, and project between two adjacent first cylindrical lenses. A plurality of first protrusions extending along the first direction, and a plurality of first troughs that are located between the two adjacent first cylindrical lenses and are not provided with the first protrusions. A first lens member having
The plurality of second cylindrical lenses having the same configuration as the first lens member, the same configuration as the plurality of first cylindrical lenses, and the plurality of second cylindrical lenses having the same configuration as the plurality of first protrusions. A second lens member, and a plurality of second troughs that are located between the two second cylindrical lenses adjacent to each other and are not provided with the second protrusions ,
With
It said first lens member and the second lens member, a second protrusion before SL multiple co the respective tips are inserted before SL in the second valley of the plurality of first protrusions in a state where each tip is inserted into the first valley before SL parts, superimposed with each other, images display. Both the first lens member and the second lens member have lens portions,
In the image medium, the first lens member, the second lens member, and the image in a state where a first mark whose position with respect to the image is fixed is visually enlarged by the lens unit. The image display device according to claim 1, wherein the image display device is provided so as to be used for alignment.   The image display device according to claim 2, wherein the lens unit includes at least one of the first cylindrical lens and the second cylindrical lens.   The first mark and the image in which the first mark is visually enlarged by the lens unit are used for alignment of the first lens member and the second lens member with the image. The image display device according to claim 2, configured as described above.   The medium has a plurality of line-shaped first marks whose positions relative to the image are fixed and extend along the first direction, the plurality of first cylindrical lenses and the plurality of second marks. The image display device according to claim 3, wherein the cylindrical lenses are arranged in the second direction at a second installation interval different from the first installation interval in the second direction. The medium includes
A first region in which the second installation interval is larger than the first installation interval;
A second region in which the second installation interval is smaller than the first installation interval;
The image display device according to claim 5, further comprising:   The image display device according to claim 6, wherein the first region and the plurality of second regions are alternately arranged along the first direction.   The first lens member and the second lens member at a position where at least a part of the second mark whose position relative to the image is fixed overlaps the first protrusion or the second protrusion. The image display device according to claim 2, wherein the image display device is configured to be aligned with the image.   A position where at least a part of the second mark whose position with respect to the image is fixed overlaps a boundary portion between the two first cylindrical lenses adjacent to each other and a boundary portion between the two second cylindrical lenses adjacent to each other The image display device according to claim 2, wherein the first lens member and the second lens member are configured to be aligned with the image.